Internal use of the administration building is supplied from step-down transformer with a capacity of 85kW there are two floors on the first floor of this building is used for the benefit of the administration offices and two floors used for office supervisor and manager of power plant units of Perak. Utilization of electrical energy in the administration building can be divided into two sectors of lighting load and cooling system air conditioning. Lighting load is generally not more than 20 while the air conditioner can achieve more than 60 Filino Harahap 1993. In the system of management management of energy office building has a 350 lux lighting standards 24oC cooling system with humidity of 65 SNI 03-6572-2001. To know the condition of existing lighting and cooling sector in this building energy management needs to be supported by a number of energy audit data. Field Project FP presents the results of energy audits on buildings in the two sectors of this burden. Audit results will be used to evaluate and establish the optimal alternative energy management. Based on the results of the audit shows that IKE Energy Consumption Intensity in the Administration Building Perak Surabaya plant already meets the standards specified IKE 74kWh m year with a standard IKE 240kWh m year for office buildings. Wastage occurred in the cooling system air conditioning use of AC power exceeds the specified safety by 85 while on AC power usage by 92 the 1st floor and 2nd floor of 93. After calculating the savings in air conditioning sector savings opportunities to obtain a 31 floor and second floor of 23.

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